- Bodipy-Phenylethynyl Anthracene Dyad: Spin-Orbit Charge Transfer Intersystem Crossing and Triplet Excited-State Equilibrium
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Spin-orbit charge transfer-induced intersystem crossing (SOCT-ISC) is a promising method to design heavy atom-free triplet photosensitizers (PSs). Herein, a new organic triplet PS, BDP-An (Bodipy-phenylethynyl anthracene dyad) has been synthesized and studied. In polar solvents, charge transfer (CT) emission band was observed, and the singlet oxygen quantum yield (ΦΔ) is up to 95%. From femtosecond transient absorption (fs TA) spectra, SOCT-ISC mechanism was verified, the charge separation (CS) time takes1.6 ps, the lifetime of charge recombination (CR) is 3.8 ns, moreover the triplet state of phenylethynyl anthracene was also observed. In nanosecond transient absorption (ns TA) spectra, long-lived triplet states (τT =108 μs) were observed, which are delocalized on both parts of the dyad, i.e. there is a triplet excited-state equilibrium. This is the first report on the triplet excited-state equilibrium observed in an electron donor/acceptor dyad showing SOCT-ISC. With BDP-An as the triplet donor and perylene as the triplet acceptor, triplet-triplet annihilation upconversion (TTA UC) was performed, the upconversion quantum yield was up to 18.9%, and the lifetime of TTA-based delayed fluorescence was determined as 70.8 μs.
- Chen, Kepeng,Gurzadyan, Gagik G.,Lei, Yanming,Tang, Geliang,Zhao, Jianzhang
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Read Online
- Novel compound and organic light emitting device comprising the same
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The present invention provides a novel compound and an organic light emitting device using the same. The present invention provides a compound represented by chemical formula 1. The compound represented by chemical formula 1 described above can be used as a material for an organic layer of the organic light emitting device, and can improve efficiency, low driving voltage, and/or lifespan characteristics in the organic light emitting device.
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- Compound, organic luminescent material and organic electroluminescent device
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The invention provides a compound as shown in a general formula (I), which has a mother structure of sym-triphenyl substituted anthracene, is high in bond energy among atoms, has good thermal stability, is beneficial to solid-state accumulation among molecules, is large in bandwidth, has a light-emitting region in a blue light region, is high in light-emitting intensity, and has a proper energy level with adjacent levels. And injection and migration of excitons are facilitated. When the compound is used as a blue light host material in a luminescent layer, the driving voltage of an organic electroluminescent device can be effectively reduced, the luminous efficiency is improved, and the service life is prolonged. The invention also provides an organic electroluminescent device and a display device containing the compound of the general formula (I).
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- ORGANIC LIGHT-EMITTING DEVICE
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An organic light-emitting device including: a first electrode; a second electrode; and an organic layer disposed between the first electrode and the second electrode, wherein the organic layer includes an emission layer, wherein the emission layer includes a polycyclic compound represented by Formula 1 and a host, and wherein an amount of the polycyclic compound is less than an amount of the host in the emission layer, wherein Formula 1 is as provided herein.
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Paragraph 0283-0285
(2021/09/17)
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- Dianthracene compound containing pyridyl at tail end and application thereof
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The invention provides dianthracene compounds shown in a general formula I in the specification. In the general formula I, L1 and L2 independently represent single bonds, substituted or unsubstituted heterocyclic aromatic groups of C2-C60 or substituted or unsubstituted hydrocarbon aromatic groups of C6-C60; L3 represents a substituted or unsubstituted heterocyclic aromatic group of C2-C60 or a substituted or unsubstituted hydrocarbon aromatic group of C6-C60; R10, R11, R12, R13, R14, R15, R16, R17, R18, R21, R23, R24, R25, R26, R27 and R28 independently represent hydrogen, halogen and substituted or unsubstituted alkyl or alkoxy of C1-C10. The compounds have good luminescence properties, high electron transport capacities and terrific solubility and can be used in luminescent materials, electron transport materials and hole-blocking materials in the electroluminescence field. The invention also provides an organic electroluminescence device at least comprising a pair of electrodes and organic luminescent media between the electrodes. The organic luminescent media at least comprise the dianthracene compounds.
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Paragraph 0172-0175
(2021/03/03)
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- Diphenylanthracene Dimers for Triplet-Triplet Annihilation Photon Upconversion: Mechanistic Insights for Intramolecular Pathways and the Importance of Molecular Geometry
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Novel approaches to modify the spectral output of the sun have seen a surge in interest recently, with triplet-triplet annihilation driven photon upconversion (TTA-UC) gaining widespread recognition due to its ability to function under low-intensity, noncoherent light. Herein, four diphenylanthracene (DPA) dimers are investigated to explore how the structure of these dimers affects upconversion efficiency. Also, the mechanism responsible for intramolecular upconversion is elucidated. In particular, two models are compared using steady-state and time-resolved simulations of the TTA-UC emission intensities and kinetics. All dimers perform TTA-UC efficiently in the presence of the sensitizer platinum octaethylporphyrin. The meta-coupled dimer 1,3-DPA2 performs best yielding a 21.2% upconversion quantum yield (out of a 50% maximum), which is close to that of the reference monomer DPA (24.0%). Its superior performance compared to the other dimers is primarily ascribed to the longer triplet lifetime of this dimer (4.7 ms), thus reinforcing the importance of this parameter. Comparisons between simulations and experiments reveal that the double-sensitization mechanism is part of the mechanism of intramolecular upconversion and that this additional pathway could be of great significance under specific conditions. The results from this study can thus act as a guide not only in terms of annihilator design but also for the design of future solid-state systems where intramolecular exciton migration is anticipated to play a major role.
- Olesund, Axel,Gray, Victor,M?rtensson, Jerker,Albinsson, Bo
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supporting information
p. 5745 - 5754
(2021/05/06)
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- Pyrene derivatives having substituted groups and organic light-emitting diode including the same
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The present invention relates to a novel compound and an organic electroluminescent device comprising the same as luminous substances, and more specifically, to a novel compound represented by formula A or formula B and an organic electroluminescent device comprising the same.
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- Evolution from Tunneling to Hopping Mediated Triplet Energy Transfer from Quantum Dots to Molecules
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Efficient energy transfer is particularly important for multiexcitonic processes like singlet fission and photon upconversion. Observation of the transition from short-range tunneling to long-range hopping during triplet exciton transfer from CdSe nanocrystals to anthracene is reported here. This is firmly supported by steady-state photon upconversion measurements, a direct proxy for the efficiency of triplet energy transfer (TET), as well as transient absorption measurements. When phenylene bridges are initially inserted between a CdSe nanocrystal donor and anthracene acceptor, the rate of TET decreases exponentially, commensurate with a decrease in the photon upconversion quantum efficiency from 11.6% to 4.51% to 0.284%, as expected from a tunneling mechanism. However, as the rigid bridge is increased in length to 4 and 5 phenylene units, photon upconversion quantum efficiencies increase again to 0.468% and 0.413%, 1.5-1.6 fold higher than that with 3 phenylene units (using the convention where the maximum upconversion quantum efficiency is 100%). This suggests a transition from exciton tunneling to hopping, resulting in relatively efficient and distance-independent TET beyond the traditional 1 nm Dexter distance. Transient absorption spectroscopy is used to confirm triplet energy transfer from CdSe to transmitter, and the formation of a bridge triplet state as an intermediate for the hopping mechanism. This first observation of the tunneling-to-hopping transition for long-range triplet energy transfer between nanocrystal light absorbers and molecular acceptors suggests that these hybrid materials should further be explored in the context of artificial photosynthesis.
- Huang, Zhiyuan,Xu, Zihao,Huang, Tingting,Gray, Victor,Moth-Poulsen, Kasper,Lian, Tianquan,Tang, Ming Lee
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supporting information
p. 17581 - 17588
(2020/11/12)
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- ORGANIC ELECTROLUMINESCENT COMPOUND AND ORGANIC ELECTROLUMINESCENT DEVICE THEREOF
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Presented is an organic electroluminescent compound and an organic electroluminescent device comprising the same. By comprising the organic electroluminescent compound of the present disclosure, it is possible to provide an organic electroluminescent device having an operating voltage lower than that of a conventional organic electroluminescent device and thus achieving higher power efficiency.
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Page/Page column 17; 18
(2020/12/07)
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- Organic compound and electronic element and electronic device using same (by machine translation)
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The invention belongs to the technical field of organic materials, and particularly relates to an organic compound and an electronic element and an electronic device using the same, wherein the organic compound has the structure shown 1. When the compound is used as an electron transport layer for preparing an organic electroluminescent device, the service life of the organic electroluminescent device can be effectively prolonged, and the luminous efficiency or the driving voltage can be improved to a certain extent. (by machine translation)
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Paragraph 0140-0142
(2021/01/15)
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- ORGANIC LIGHT-EMITTING DEVICE AND COMPOUND
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Provided are an organic light-emitting device having improved luminescent efficiency and a compound.
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Paragraph 0331-0332; 0335-0336
(2020/03/23)
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- A benzo-thiophene derivative and its preparation method, applications and devices (by machine translation)
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The invention relates to a benzo-thiophene derivative and its preparation, applications and devices. The invention provides a benzo b thiophene derivatives through rich in electronic benzodithiophenes and hole-rich bridging group, to form a bipolar structure, having a higher glass transition temperature, and good thermal stability. When the thereof as electron transfer material is applied to the organic electroluminescent device when, with the prior technology commonly used azole compared with electronic transmission material, with each layer of material between the matching degree of the energy of the high, electronic transmission rate is high, the driving voltage of the device, the light-emitting brightness, external quantum efficiency is obviously improved in, and is an ideal electronic transmission material. (by machine translation)
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Paragraph 0071-0073
(2019/07/04)
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- Organic blue fluorescent material and preparation method and application thereof
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The invention relates to an organic blue fluorescent material and a preparation method and application thereof. The material adopts a delta bond as a bridge chain to connect two anthracene molecule luminescence units and regulate the conjugation state of organic molecules; meanwhile, a steric hindrance group is introduced onto the delta bond to inhibit a pi-pi accumulation effect among the organicmolecules, and correspondingly the organic blue fluorescent material is prepared and has high thermal stability and high luminous quantum efficiency. The specific preparation method and application mainly include the steps of adopting 9-benzanthracene-10 borate and 4,4'-dibromo diphenyl bis-substituted methane for conducting a Suzuki coupling reaction to prepare the organic blue fluorescent material. The material is adopted as a luminous layer and achieves a non-doped deep blue OLED device with high performance.
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- Organic blue fluorescent material based on dianthracene as well as preparation method and application of organic blue fluorescent material
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The invention relates to an organic blue fluorescent material based on dianthracene as well as a preparation method and application of the organic blue fluorescent material. The molecular design of the material takes benzene as a central pi conjugated bridge chain, two anthracene luminescent units are connected to a meta-position of the central pi conjugated bridge chain, and the pi conjugated form of organic material molecules and pi-pi stack among molecules are regulated, so that the deep blue light emission in OLED device application is realized; meanwhile, a group with electron donating property or a group with electron withdrawing property is introduced to the central pi conjugated bridge chain, so as to further inhibit pi-pi stack among the material molecules, realize high laminationquantum efficiency of the material molecules and prepare the organic blue fluorescent material, and the material has good thermal stability and high lamination quantum efficiency.
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- Organic light emitting compound and organic light emitting device including the same
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Disclosed is an organic light emitting compound represented by Formula I: Also disclosed is an organic light emitting device including the organic light emitting compound. The organic light emitting device can be driven at a low voltage to achieve high power efficiency. In addition, the organic light emitting device has excellent luminescent properties, such as high luminance and high luminous efficiency. Due to these advantages, the organic light emitting device can be utilized as a display device or a lighting device.
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- Synthesis, enantioseparation and photophysical properties of planar-chiral pillar[5]arene derivatives bearing fluorophore fragments
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Planar chiral pillar[5]arene derivatives (P5A-DPA and P5A-Py) bearing bulky fluorophores were obtained in high yield by click reaction. The photophysical properties of both compounds were investigated in detail. P5A-DPA with two 9,10-diphenylanthracene (DPA) pigments grafted on the pillar[5]arene showed a high fluorescence quantum yield of 89.5%. This is comparable to the monomer DPA-6, while P5A-Py with two perylene (Py) pigments grafted on the pillar[5]arene showed a significantly reduced quantum yield of 46.4% vs 78.2% for the monomer Py-6. The oxygen-through-annulus rotation of the phenolic units was inhibited for both compounds due to the bulky chromophore introduced, and the resolution of the enantiomers was achieved due to the bulky size of the fluorophores. The absolute configuration of the enantiomers was determined by circular dichroism (CD) spectra. The solvent-induced aggregation behavior was investigated with the enantiopure P5A-DPA and P5A-Py. It was found that the CD signals were enhanced by aggregation. P5A-DPA showed aggregation-induced emission enhancement, while P5A-Py showed aggregation-induced emission quenching, accompanied by excimer emission when aggregating in water and THF mixed solution.
- Li, Guojuan,Fan, Chunying,Cheng, Guo,Wu, Wanhua,Yang, Cheng
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p. 1601 - 1611
(2019/08/07)
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- Anthracene derivatives and organic light emitting devices comprising the same
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An anthracene derivative represented by Formula 1 is disclosed. An organic light-emitting device including an anode, a cathode, and an organic layer between the anode and the cathode, where the organic layer includes at least one anthracene derivative represented by Formula 1, is also disclosed. A method of manufacturing the organic light-emitting device is also disclosed.
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- Antracene derivatives having heteroaryl substituted naphthyl group and organic light-emitting diode including the same
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An anthracene derivative represented by the following [Chemical Formula A] and an organic light emitting device including the same are provided X. 1 To X7 , Y and Z are as defined by the description of the invention. [Formula A] (by machine translation)
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- Anthracene derivatives and organic light-emitting diode including the same
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PURPOSE: An anthracene derivative is provided to have excellent power efficiency by low voltage operation and to provide an organic electroluminescent device with excellent luminance efficiency and a long lifetime. CONSTITUTION: An anthracene derivative is represented by chemical formula 1. An organic electroluminescent device includes an anode(20); a cathode(80) opposite to the anode; and an organic layer inserted between the anode and the cathode. The organic layer is one or more layers. The organic layer includes the anthracene derivative. The organic layer includes one or more layers selected from a light emitting layer(50), a hole injection layer(30), a hole transport layer(40), a hole blocking layer, an electron transport layer(60), an electron injection layer(70), and an electron blocking layer.
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- Antracene derivatives having heteroaryl substituted naphthyl group and organic light-emitting diode including the same
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The present invention relates to an antracene derivative represented by the following [Formula A] and an organic light-emitting diode including the same. Substituents X_1 to X_7 , Y, and L are the same as defined in the detailed description of the invention.
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- Semiconducting Material Comprising a Phosphine Oxide Matrix and Metal Salt
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The present invention is directed to a semiconducting material comprising: i) a compound according to formula (I) wherein R1, R2 and R3 are independently selected from C1-C30-alkyl, C3-C30 cycloalkyl, C2-C30-heteroalkyl, C6-C30-aryl, C2-C30-heteroaryl, C1-C30-alkoxy, C3-C30-cycloalkyloxy, C6-C30 aryloxy, and from structural unit having general formula E-A-, wherein—A is a C6-C30 phenylene spacer unit, and—E is an electron transporting unit that is selected from C10-C60 aryl and C6-C60 heteroaryl comprising up to 6 heteroatoms independently selected from O, S, P, Si and B and that comprises a conjugated system of at least 10 delocalized electrons, and—at least one group selected from R1, R2 and R3 has the general formula E-A-; and ii) at least one complex of a monovalent metal having formula (II) wherein—M+ is a positive metal ion bearing a single elementary charge, and each of A1, A2, A3 and A4 is independently selected from H, substituted or unsubstituted C6-C20 aryl and substituted or unsubstituted C2-C20 heteroaryl, wherein a heteroaryl ring of at least 5 ring-forming atoms of the substituted or unsubstituted C2-C20 heteroaryl comprises at least one hetero atom selected from O, S and N.
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- ANTHRACENE BASED COMPOUND AND ORGANIC LIGHT EMITTING DEVICE COMPRISING THE SAME
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The present specification provides an anthracene-based compound of chemical formula 1, and an organic light emitting device having the same. By having a substituent including an aryl group or a heteroaryl group at a position of 9 and 10 of anthracene, and applying the substituent to the organic light emitting device, the light emitting efficiency and durability of the organic light emitting device can be significantly improved.COPYRIGHT KIPO 2018
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- Organic blue fluorescent materials as well as preparation method and application thereof
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The present invention relates to organic blue fluorescent materials as well as a preparation method and application thereof. The materials have a structural formula represented by a formula (I) shownin the description, wherein R includes a group having an electron-donating property or a group having an electron-withdrawing property; and the preparation method mainly includes the following preparation step: 9-benzoquinone-10 borate and 1,4-dibromo-2,5-disubstituted benzene are subjected to a Suzuki coupling reaction to prepare the organic blue fluorescent material. The method provided by the present invention uses benzene as a pi conjugated bridge chain to connect two anthracene molecule luminescent units, and introduces a sterically-hindered group at p-position of a benzene ring of the center pi conjugated bridge chain to eliminate pi-pi stacking interaction among molecules through precise design of material molecules; and the prepared organic blue fluorescent material has good thermal stability and high luminescence quantum efficiency.
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- Substituted aromatic compound, a blue light-emitting materials, the organic EL element
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PROBLEM TO BE SOLVED: To provide a substituted aromatic compound, a blue light-emitting material using the same and having high color reproducibility, high color purity and high efficiency, and an organic electroluminescent (EL) element.SOLUTION: The substituted aromatic compound is represented by the general formula [1], where Rto Rare each independently hydrogen or a C1-C4 linear or branched alkyl group; A is hydrogen, a C1-C4 linear or branched alkyl group, or a C1-C4 linear or branched alkoxy group; and EWG is a cyano group or a trifluoromethyl group.
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- aromatic compound having fused cyclic substituent in aromatic ring and organic light-emitting diode including the same
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The present invention relates to a compound having a cyclic substituent fused with a cyclic ring and an organic light emitting diode including the same, and more particularly, to a compound for an organic light emitting diode represented by chemical formula A and an organic light emitting diode including the same. In chemical formula A, X is a substituent having structural formula X, Y is a substituent of structural formula Y1, n is an integer from 1 to 4, and structural formulas X and Y1 are the same as described in detailed description of the present invention.
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- Annular N-heterocycle double-carbene palladium coordination compound and preparation method and application thereof
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The invention discloses an annular N-heterocycle double-carbene palladium coordination compound and a preparation method and application thereof. 1,4-2(N-ethyl-benzimidazole onium methyl)-2,3,5,6-tetramethylbenzene arene salt is used as a precursor of the annular N-heterocycle double-carbene palladium coordination compound. The synthetic annular N-heterocycle double-carbene palladium coordinationcompound is used as a catalyst and used for catalyzing the cross-coupling reaction of carbon-carbon bonds. The preparation method of the annular N-heterocycle double-carbene palladium coordination compound comprises the steps that under nitrogen protection, 1,4-2(N-ethyl-benzimidazole onium methyl)-2,3,5,6-tetramethylbenzene arene salt and metal compounds are added to a reaction vessel according to a molar ratio of 1:(2-5), an organic solvent is added to the mixture, then reaction is conducted for 12-24 hours under the temperature of 0-100 DEG C, the mixture is filtered and subjected to etherdiffusion, and the annular N-heterocycle double-carbene palladium coordination compound is obtained. The prepared annular N-heterocycle double-carbene palladium coordination compound is mainly appliedto the technical field of catalysts.
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Paragraph 0036; 0037; 0038; 0039; 0040; 0041
(2018/04/26)
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- Organic light emitting device
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The present invention relates to an organic light emitting device having improved driving voltage, efficiency and lifetime.
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Paragraph 0070-0071; 0079-0080
(2019/02/16)
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- A 1,5-Bifunctional Organomagnesium Reagent for the Synthesis of Disubstituted Anthracenes and Anthrones
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The preparation of a 1,5-bifunctional organomagnesium alkoxide reagent by a deprotonation-magnesiation sequence is described. This reagent reacts with carboxylic acid esters to incorporate the carboxyl carbon atom of the ester into the newly formed ring. The magnesium bisalkoxide resulting from this double nucleophilic attack is subsequently transformed in situ into halogenated disubstituted anthracenes, monosubstituted anthracenes, anthrones, or 9-substituted dihydroanthracene-cis-diols by variation of the acidic workup procedures.
- Link, Achim,Fischer, Christian,Sparr, Christof
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p. 397 - 402
(2016/12/24)
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- ORGANIC LIGHT-EMITTING DIODE WITH HIGH EFFICIENCY AND LONG LIFETIME
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Disclosed herein is an organic light-emitting diode, comprising: an organic light-emitting diode, comprising: a first electrode; a second electrode facing the first electrode; a light-emitting layer intercalated between the first electrode and the second electrode, wherein the light-emitting layer comprises at least one of the amine compounds represented by Chemical Formula A or B, and at least one of the anthracene compounds represented by Chemical Formula C.
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- A thiadiazole compound, a compound for a light-emitting element, light-emitting element, the light emitting device, the authentication device and electronic device
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PROBLEM TO BE SOLVED: To provide a thiadiazole compound, a compound for light-emitting elements, and a light-emitting element capable of emitting light in the near-infrared region and having high efficiency and long life, and a light-emitting device, an authentication device, and an electronic device having the light-emitting element.SOLUTION: The thiadiazole compound is represented by the following formula (1), wherein Xs each independently represent a hydrogen atom or a functional group, and a ring may be formed by adjacent two or more Xs.
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Paragraph 0148
(2017/07/23)
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- Boron-nitrogen derivative used for organic electroluminescence
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The invention provides a boron-nitrogen derivative used for organic electroluminescence. The boron-nitrogen derivative is characterized by having a structure as shown in a general formula (I) which is described in the specification. In the general formula (I), A is C or N; and n and m are any number selected from the group consisting of 0, 1, 2 and 3. Furthermore, the invention also provides an organic electroluminescent blue-light emitting host material, an electron injection material, an electronic transmission material and a device containing the above-mentioned boron-nitrogen derivative. The boron-nitrogen derivative provided by the invention has good solubility and thermal stability, is used as a blue-light emitting host material, and can simultaneously solve the disadvantages of easy crystallization of a small molecule object material and low Tg of a wide energy band host material.
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Paragraph 0046; 0047; 0055; 0056
(2017/10/13)
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- Synthesis and property of new propeller shaped emitting materials for organic light-emitting devices
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New propeller type emitting compound, namely 3,6-di-anthracen-9-yl-9,10-bis-(4-anthracen- 9-yl-phenyl)-phenanthrene[TAnDAP] and 3,6-bis-(10-phenyl-anthracen-9-yl)-9,10-bis-[4-(10-phenylanthracen- 9-yl)-phenyl]-phenanthrene [TAnPDAP] were synthesized through Suzuki and McMurry reactions. We investigated their physical properties such as optical, electrochemical, and electroluminescent properties. The two compounds were used as an emitting layer in OLED devices: ITO/2-TNATA (60 nm)/NPB (15 nm)/non-doped: TAnDAP or TAnPDAP (35 nm)/Alq3 (20 nm)/LiF (1 nm)/Al (200 nm). The TAnDAP OLED device showed C.I.E. value of (0.28, 0.41) and luminance efficiency of 3.81 cd/A at 10 mA/cm2. The TAnPDAP device showed C.I.E. value of (0.20, 0.27) and high luminance efficiency of 5.40 cd/A at 10 mA/cm2. TAnPDAP was found to show better luminance efficiency and C.I.E. value than TAnDAP because it has a bulky 9-phenylanthracene.
- Kang, Seokwoo,Lee, Hayoon,Kim, Beomjin,Park, Youngil,Park, Jongwook
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p. 3102 - 3105
(2016/03/19)
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- ORGANIC OPTOELECTRIC DEVICE AND DISPLAY DEVICE
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The present invention relates to an organic optoelectric device and a display device comprising the organic optoelectric device. The organic optoelectric device comprises: a positive electrode and a negative electrode facing each other; a luminescent layer located between the positive electrode and the negative electrode and comprising a compound represented by the chemical formula 1; and a hole transport layer located between the positive electrode and the luminescent layer and comprising a compound represented by the chemical formula 2. In the chemical formula 1, X^1, Ar^1, Ar^2, R^1 to R^11, L^1 to L^3, and Ar^3 to Ar^5 are the same as defined in the specification. The present invention is designed to embody an organic optoelectric device with high efficiency and long-life.COPYRIGHT KIPO 2016
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- ORGANIC OPTOELECTRIC DEVICE AND DISPLAY DEVICE
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The present invention relates to an organic photoelectric element which comprises: a positive electrode and a negative electrode facing each other; a light emitting layer which is expressed as chemical formula 1 by being located between the positive electrode and the negative electrode; and a hole transporting layer located between the positive electrode and the light emitting layer and including a compound which is expressed as chemical formula 2. Also, the present invention relates to a display device comprising the organic photoelectric element. In the chemical formula above, X^1, Ar^1, Ar^2, R^1-R^11, L^1-L^3, and Ar^3-Ar^5 are the same as defined in the specification.COPYRIGHT KIPO 2016
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- COMPOUND FOR ORGANIC ELECTROLUMINESCENT ELEMENT AND ORGANIC ELECTROLUMINESCENT ELEMENT USING THE SAME
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PROBLEM TO BE SOLVED: To provide a compound for an organic electroluminescent element which allows a sufficiently long driving life to be obtained when used as a constituent material of an organic electroluminescent element, and to provide an organic electroluminescent element using the compound. SOLUTION: The compound for an organic electroluminescent element is an anthracene compound having at least one substituent represented by general formula (2). The organic electroluminescent element uses the compound. (L is a linking group and is a single bond, a substituted/unsubstituted arylene group, a substituted/unsubstituted divalent group having a heterocyclic skeleton, or the like; and R1 and R2 are each independently H, a substituted/unsubstituted alkyl group, or the like.) SELECTED DRAWING: None COPYRIGHT: (C)2016,JPOandINPIT
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- PHENANTHROLINE DERIVATIVE FOR ORGANIC ELECTROLUMINESCENT DEVICE
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The present invention discloses a phenanthroline derivative is represented by the following formula(I), the organic EL device employing the phenanthroline derivative as hole blocking electron transport material, electron transport material can display good performance like as lower driving voltage and power consumption, increasing efficiency and half-life time. Wherein Ar, X, m, n, p and R1 to R3 are the same definition as described in the present invention.
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Paragraph 0021; 0022
(2016/10/20)
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- Remote-Controlled Release of Singlet Oxygen by the Plasmonic Heating of Endoperoxide-Modified Gold Nanorods: Towards a Paradigm Change in Photodynamic Therapy
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The photodynamic therapy of cancer is contingent upon the sustained generation of singlet oxygen in the tumor region. However, tumors of the most metastatic cancer types develop a region of severe hypoxia, which puts them beyond the reach of most therapeutic protocols. More troublesome, photodynamic action generates acute hypoxia as the process itself diminishes cellular oxygen reserves, which makes it a self-limiting method. Herein, we describe a new concept that could eventually lead to a change in the 100 year old paradigm of photodynamic therapy and potentially offer solutions to some of the lingering problems. When gold nanorods with tethered endoperoxides are irradiated at 808 nm, the endoperoxides undergo thermal cycloreversion, resulting in the generation of singlet oxygen. We demonstrate that the amount of singlet oxygen produced in this way is sufficient for triggering apoptosis in cell cultures. EPT sees the light: When gold nanorods with tethered endoperoxides are irradiated with near-infrared light, the endoperoxides undergo thermal cycloreversion, resulting in the generation of singlet oxygen. The amount of singlet oxygen generated by these nanocomposites is sufficient for triggering apoptosis in cell cultures.
- Kolemen, Safacan,Ozdemir, Tugba,Lee, Dayoung,Kim, Gyoung Mi,Karatas, Tugce,Yoon, Juyoung,Akkaya, Engin U.
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supporting information
p. 3606 - 3610
(2016/03/23)
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- Condensed-cyclic compound and organic light emitting device comprising the same
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Including the same fused ring compound and is disclosure is an organic light emitting device. (by machine translation)
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Paragraph 0341-0344; 0374-0377
(2016/10/10)
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- Regioselective annulation of unsymmetrical 1,2-phenylenebis(diaryl/diheteroarylmethanol): A facile synthesis of anthracene, tetracene, and naphtho[b]thiophene analogues
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A systematic study on the regioselective cyclization of benzene- and naphthalene-based unsymmetrical diols with HBr (33 %) in acetic acid at room temperature led to the formation of annulation products. By using this method, synthesis of a wide variety of anthracene, tetracene and naphtho[b]thiophene analogues was achieved in good to excellent yields. By employing HBr (33 %) in acetic acid as a catalyst for regioselective cyclization of unsymmetrical diols was very facile and devoid of commonly encountered dihydroisobenzofuran formation. Regioselective cyclization of benzene- and naphthalene-based unsymmetrical diols with HBr (33 %) in acetic acid at room temperature led to the formation of annulated arenes and heteroarenes in good to excellent yields.
- Sivasakthikumaran, Ramakrishnan,Rafiq, Settu Muhammad,Sankar, Elumalai,Clement, J. Arul,Mohanakrishnan, Arasambattu K.
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p. 7816 - 7835
(2015/12/31)
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- Switching of the triplet-triplet-annihilation upconversion with photoresponsive triplet energy acceptor: Photocontrollable singlet/triplet energy transfer and electron transfer
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A photoswitchable fluorescent triad based on two 9,10-diphenylanthracene (DPA) and one dithienylethene (DTE) moiety is prepared for photoswitching of triplet-triplet annihilation upconversion. The DPA and DTE moieties in the triad were connected via Click reaction. The DPA unit in the triad was used as the triplet energy acceptor and upconverted fluorescence emitter. The fluorescence of the triad is switched ON with the DTE moiety in open form [DTE-(o)] (upconversion quantum yield UC = 1.2%). Upon UV irradiation, photocyclization of the DTE-(o) moiety produces the closed form [DTE-(c)], as a result the fluorescence of DPA moiety was switched off (UC is negligible). Three different mechanisms are responsible for the upconverted fluorescence photoswitching effect (i.e., the photoactivated fluorescence resonance energy transfer, the intramolecular electron transfer, as well as the photoactivated intermolecular triplet energy transfer between the photosensitizer and DTE-(c) moiety). Previously, the photoswitching of TTA upconversion was accomplished with only one mechanism (i.e., the triplet state quenching of the photosensitizer by DTE-(c) via either the intermolecular or intramolecular energy transfer). The photophysical processes involved in the photochromism and photoswitching of TTA upconversion were studied with steady-state UV-vis absorption and fluorescence emission spectroscopies, nanosecond transient absorption spectroscopy, electrochemical characterization, and DFT/TDDFT calculations.
- Xu, Kejing,Zhao, Jianzhang,Cui, Xiaoneng,Ma, Jie
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p. 468 - 481
(2015/01/30)
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- Novel aromatic compounds for organic light-emitting diode and organic light-emitting diode including the same
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The present invention relates to an organic light emitting compound represented by chemical formula A, and to an organic light emitting device comprising the same. In the chemical formula A, a cyclic group A_1 to A_3, R_1 to R_11, L, n, a structural formula Q, and a structural formula Aandprime; are the same as described in the specification.COPYRIGHT KIPO 2016
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- aromatic compound having fused cyclic substituent in aromatic ring and organic light-emitting diode including the same
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The present invention refers to to the aromatic ring-fused ring withdrawing substituent and a compound having an same relates to organic light emitting device including, more specifically a represented by [formula A] an alkali-soluble polymer resin compound for an organic light-emitting device including organic light emitting device is characterized in that the. [Formula A] In said [formula A], X has a dementia drug; and shows strong X having substituted group, Y has a dementia drug; and shows strong formula selected from the group consisting Y1 to Y5 having one of substituted group, the n being integers, of 4 to 1, the Y5 formula to Y1 formula and X formula detailed description of the invention is described. (by machine translation)
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- Antracene derivatives and organic light-emitting diode including the same
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The present invention relates to an anthracene derivative and an organic light-emitting diode including the same and, more specifically, to a compound for an organic light-emitting diode represented by Chemical Formula A and an organic light-emitting diode including the same. [Chemical Formula A] In Chemical Formula A, R_1, R_2, m, n, and X_1 to X_7 are the same as described in the detailed description of the invention.COPYRIGHT KIPO 2015
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- Anthracene derivative and organic electroluminescent device including the same
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The present invention discloses an anthracene derivative which can be represented by chemical formula 1. (The definitions of the respective substituents chemical formula 1 are given in the detailed description of the invention.)
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- Pyrene derivatives and organic light-emitting diode including the same
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The present invention relates to a pyrene derivative and an organic light emitting diode including the same. In particular, the pyrene derivative is presented by [chemical formula A] below. [chemical formula A].
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- Organic light-emitting diode including aryl substituted antracene derivatives
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The present invention, in regards to an organic light emitting diode comprising a luminous layer and an electron transport layer between a first electrode and a second electrode, relates to an organic light emitting diode which includes one or more anthracene derivatives selected from compounds represented by chemical formula A below in the electron transport layer, and which includes one or more anthracene derivatives selected from compounds represented by chemical formula B below in the luminous layer. L_a, L_b, A, Y and m below are defined in the detailed description of the present invention.
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- Organic light-emitting diode including aryl substituted antracene derivatives
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The present invention relates to an organic light emitting diode comprising a light emitting layer and an electron transport layer between a first electrode and a second electrode. The electron transport layer contains one or more kinds of anthracene derivatives selected from compounds represented by chemical formula A. The light emitting layer includes one or more kinds of anthracene derivatives selected from compounds represented by chemical formula B. A, X1 to X7, and Q1 to Q7 are as defined in the detailed description of the present invention.
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- Organic light-emitting diode including aryl substituted antracene derivatives
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The present invention refers to number 1 number 2 electrode and including unevenness on the between the electrodes in organic light emitting device, the light takeout efficiency to the derivative is represented by the following formula A 1 which is selected from includes indicates on the paper, the light emitting layer to said derivative is represented by the following formula B on the paper 1 which is selected from organic light emitting device including an anthracene derivative of relates to a A, X 1 to X 7, Q 1 to Q 7 are the same as defined in the detailed description of the invention.. [Formula A] [formula B]
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- Direct C-H arylations of unactivated arenes catalyzed by amido-functionalized imidazolium salts
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The synthesis of biaryls from unactivated arenes and a broad range of aryl bromides and chlorides via the direct C-H functionalization can be efficiently performed with the aid of amido-functionalized imidazolium salts as organocatalysts. This method avoids the use of toxic transition metal catalysts and organometallic reagents.
- Ghosh, Debalina,Lee, Jhen-Yi,Liu, Chian-Yu,Chiang, Yen-Hsin,Lee, Hon Man
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supporting information
p. 406 - 410
(2014/05/20)
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- Conjugated anthracene dendrimers with monomer-like fluorescence
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Two generations of highly emissive conjugated anthracene dendrimers containing up to 9 anthracene units are presented. In these dendrimers, anthracene-like absorption and emission properties are preserved due to the relatively weak electronic coupling between the anthracene units, while evidence of fast crosstalk within the molecular framework is still observed.
- Boerjesson, Karl,Gilbert, Melina,Dzebo, Damir,Albinsson, Bo,Moth-Poulsen, Kasper
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p. 19846 - 19850
(2014/05/20)
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